The original trilogy makes a nice showing, with Empire Strikes Back at #3, A New Hope at #22 and Return of the Jedi at #91. (Plus, Raiders of the Lost Ark is #2.) The prequel trilogy clocks in with The Phantom Menace at #449 and Revenge of the Sith at #330.

As for other movies of interest: Serenity (#383,) Clerks (#361,) Shaun of the Dead (#231,) The Princess Bride (#122,) Batman Begins (#81,) Evil Dead (#49,) The Matrix (#39,) Terminator 2 (#35,) Aliens (#30,) Blade Runner (#20,) 2001 (#16,) and The Dark Knight (#15.) I think all of LOTR was in the top 100 too, but I lost track because 500 MOVIES IS RIDICULOUS.